The High-speed TTL probe circuit

Published:2011/6/15 1:43:00 Author:Christina | Keyword: High-speed, TTL, probe | From:SeekIC

The RS flip-flop which is composed of the NAND gates can detect the narrow pulse, and the narrowest pulse width is the total delay time (about 30ns) of the flip-flop's two NAND gates. When the pulse appears, the circuit will change and the LEDs display the output state of flip-flop. You must use the K after detecting the pulse; By resetting the circuit and according to the choice of K1, this circuit can response the positive pulse or negative pulse.



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